#646DD2#646DD2

#646DD2 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.7% C 0.153 H 276.6°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#646DD2
RGB	rgb(100, 109, 210)
HSL	hsl(235, 55%, 61%)
HSV	hsv(235, 52%, 82%)
CMYK	cmyk(52.4%, 48.1%, 0%, 17.6%)
CIE-LAB	lab(49.86, 24.77, -53.39)
CIE-LCH	lch(49.86, 58.85, 294.89°)
OKLab	oklab(57.73% 0.0177 -0.1521)
OKLCH	oklch(57.73% 0.153 276.6)
XYZ	xyz(22.3534, 18.2983, 63.3143)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DD2 #D2C964

analogous

#64A4D2 #646DD2 #9264D2

triadic

#646DD2 #D2646D #6DD264

tetradic

#646DD2 #D264A4 #D2C964 #64D292

square

#646DD2 #D264A4 #D2C964 #64D292

split-complementary

#646DD2 #D29264 #A4D264

monochromatic

#2A3391 #3843C1 #646DD2 #939AE0 #C3C6EE

Accessibility & contrast

On white

4.51

#646DD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#646DD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DD2

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DD2	#FFFFFF	#000000	##000000
##646DD2	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7BD6

Deuteranopia (green-blind)

#3272D0

Tritanopia (blue-blind)

#338395

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646dd2;
/* rgb */ color: rgb(100, 109, 210);
/* oklch */ color: oklch(57.7% 0.153 276.6);

Tailwind

colors: {
  custom: {
    50: '#9796e0',
    500: '#646dd2',
    950: '#000000',
  },
}

SCSS

$custom: #646dd2;
$custom-light: #9796e0;
$custom-dark: #000000;

JSON

{
  "hex": "#646dd2",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 210
  },
  "hsl": {
    "h": 235.091,
    "s": 55,
    "l": 60.784
  },
  "oklch": {
    "l": 0.57727,
    "c": 0.15314,
    "h": 276.6
  },
  "luminance": 0.183
}

Semantic roles & 50–950 ramp

primary

#646DD2

secondary

#DEDAB4

accent

#B523C3

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646DD2

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →